Watchmaker&#39;s tool.



E. CAMPBELL.

WATGHMAKERS TOOL! APPLIOATION FILED 8122122, 1910.

1,001,248; Patqnted Aug. 22,1911,

COLUMBIA PLANOGIAPH CO-.WASMINGTON, 0.6.

ELTON CAMPBELL, 0F FRANKFORT, INDIANA.

WATCHMAKERS TOOL.

Specification of Letters Patent.

Application filed September 2, 1910. Serial N 0. 580,258.

To all whom it may concern:

Be it known that I, ELTON CAMPBELL, citizen of the United States,residing at Frankfort, in the county of Clinton and State of Indiana,have invented certain new and useful Improvements in Watchmakers Tools,of which the following is aspecification.

This invention relates to watch-makers tools and more particularly to awrench especially designed for removing the threaded backs and bezelsfrom watch cases.

The object of the invention is to provide a comparatively simple, andthoroughly efiicient tool of the character described by means of whichthe back or bezel of a watch case may be readily removed without dangerof breaking the crystal or scratching or otherwise marring said watchcase.

A further object is to provide a watchmakers tool includingpivotally-united handles having relatively stationary and movablecross-arms secured thereto and on which are slidably mounted coactingclamping jaws for engagement with the back or bezel of a watch case.

A further object is to provide a watchmakers tool, the construction ofwhich is such that the clamping jaws thereof may be adjusted to fitwatch cases of different sizes.

A still further object is generally to improve this class of devices soas to increase their utility, durability and eflioiency, as well as toreduce the cost of manufacture.

For a full understanding of the invention reference is to be had to thefollowing description and accompanying drawing, in which Figure 1 is aperspective view of a watchmakers tool constructed in accordance with myinvention. Fig. 2 is an end elevation showing a watch in positionbetween the clamping jaws thereof. Fig. 3 is a top plan view showing theposition of the movable jaw when the operating handles are oscillated toelfectthe removal of the back or bezel of a watch case. Fig. 4 is adetail sectional view showing the manner of locking the clamping jaws inposition on the supporting arms.

Corresponding and like parts are referred to in the followingdescription and inclicated in all theviews of the accompanying drawingby the same reference characters.

The improved watch-makers tool forming the subject-matter of the presentinvention comprises co-acting handles 5 and 6 pivotally united at 7 andeach having one end thereof projected longitudinally beyond the pivotpin 7 to form an extension 8.

Secured to the free end of the extension 8 of the handle 6 is astationary cross-arm 9 having its upper surface provided with a seatingrecess 10 for the reception of said extension and to which it is rigidlysecured by bolts, rivets, or similar fastening devices 11. The oppositeends of the stationary cross-arm 9 are reduced and dove-tail incross-section, as shown, to form supports for adjustable segmentalclamping aws 12. The jaws 12 are provided with dove-tail recesses forthe reception of the reduced ends of the cross-arm 9 and on which theyare slidably mounted so as to fit the backs or bezels of watch cases ofdifferent sizes.

The lower face of each clamping jaw 12 is provided with a seating recess13, the bottom wall of which is inclined upwardly in the direction ofthe adjacent extension 8-, there being packing strips 14 formed ofleather, rubber, or other suitable material seated in the recesses 13 soas to prevent scratching, or otherwise marring the watch case when thetool is operated to effect the removal of either the bezel or backthereof.

Pivotally mounted at 15 on the extension of the handle 5 is a movablejaw 16, similar in construction to the stationary jaw 9 and on which areslidably mounted corresponding clamping members 17.

The outer faces of the stationary and movable cross-arms 9 and 16 areformed with a series of sockets or depressions 18 adapted to receive aclamping screw 19 threaded in a boss 20 on the adjacent jaw 12, and bymeans of which said jaws may be held in adjusted position.

The inclined walls of the recesses 13 are preferably formed with pocketsor depressions 21 which serve to hold the adhesive material-employed forsecuring the strips 14 in position thereon, said strips being heldagainst longitudinal movement by terminal stop-shoulders 22 formed atthe opposite ends of the seating recesses, as best shown in Fig. 1 ofthe drawings. It will here be noted that the bearing faces of the strips14: are inclined or beveled to conform to the shape of the watch case sothat a uniform pressure will be exerted on the watch case when thehandles 5 and 6 are forced together. v

In uslng the tool a watch case is inserted between the extensions 8 ofthe operating Patented Aug. 22, 1911. v

handles with either the bezel or back thereof bearing against the strips1 1 of the clamping jaws 17 The handles 5 and 6 are then forced togetherwhich clamp the upper jaws 15 in engagement with the watch case so thatby holding the watch case and lower jaws 17 in one hand and oscillatingthe handles 5 and 6 with the other the back or bezel of the case may bequickly removed without danger of scratching or otherwise injuring thecase, or works thereof.

By sliding the clamping jaws 12 and 17 longitudinally of the cross-armsand rotating the screws 19, said jaws may be readily adjusted toaccommodate watch cases of diiferent sizes, as will be readilyunderstood.

It will of course be understood that the cross arms 9 and 16 may beround, square or of any other shape in cross section, in which event theopenings in the clamping jaws will be correspondingly shaped. It

will'also be understood that by making the extensions 8 of the handlescloser together, the cross arms 9 and 16 may be straight instead ofcurved.

The tools may be made in different sizes and shapes and nickeled,japanned or 0th erwise coated to prevent rusting.

Having thus described the invention what is claimed as new is 1. Awatch-makers tool including pivotally united handles, co-acting crossarms carried by the handles, one of which is rigid and the other movablein an arc, and clamping jaws slidably mounted on said cross arms.

2. A watch-makers tool including pivotally united handles, a relativelystationary cross-arm, carried by one of the handles, a movable cross-armpivotally mounted on the other handle, clamping jaws slidably mounted onthe cross-arms,

and fastening devices extending through the jaws and engaging theadjacent cross-arms for holding the jaws in different positions ofadjustment.

3. A watch-makers tool including pivotally united handles each havingone end thereof projected longitudinally beyond its pivot to form anextension, a stationary cross-arm secured to the extension of onehandle, a movable cross-arm pivotally mounted on the extension of themating handle, clamping jaws slidably mounted on said cross-arms, andfastening devices extending through the clamping jaws and en gaging theadjacent cross-arms for securing the jaws in different positions ofadjustment. I

4. A watch-makers tool including pivotally united handles, relativelystationary and movable cross-arms carried by the handles and each havinga series of depressions Copies of this patent may be obtained for formedtherein, clamping jaws slidably carried on the cross-arms, and screwsthreaded in the clamping jaws and engaging the adjacent depressions inthe cross-arms for holdingthe jaws in different positions of adjustment.

5. A watch-makers tool including pivotally united handles, relativelystationary and movable cross-arms carried by the handles, clamping jawsslidably mounted on the cross-arms and having their inner faces providedwith seating recesses, and packing strips seated in said recesses andprovided with inclined gripping faces.

6. A watch-makers tool including pivotally united handles, relativelystationary and movable cross-arms carried by thehandles having theiropposite ends substantially dove-tail in cross-section, segmentalclamping jaws having correspondingly shaped recesses formed thereinforthe reception of the cross-arms, packing strips secured to the innerfaces of the jaws and provided with inclined gripping faces, and meanspiercing the clamping jaws and engaging the adjacent cross-arms forholding said jaws in different positions of adjustment.

7 A watch-makers tool including pivotally united handles, each havingone end thereof projected beyond its pivot to form an extension, astationary cross-arm having seating recesses formed therein for the reception of the extension of one of the handles and to which is rigidlysecured, a movable cross-arm pivotally mounted on the extension of themating handle, said crossarms being provided with depressions, segmentalgripping jaws slidably mounted on the cross-arms and having their lowerfaces provided with seating recesses defining oppositely disposedstop-shoulders, there being pockets formed in the walls of the seatingrecesses, and threaded bosses formed on the jaws opposite said seatingrecesses, packing strips engaging the seating recesses and havinginclined gripping faces, and screws threaded in the bosses on saidgripping jaws and engaging the depressions in the crossarms for holdingsaid jaws in different positions of adjustment.

8. A watch-makers tool including pivotally united members, co-actingconcavo-convex cross arms carried by said members, one of which is rigidand the other movable in an arc, and clamping jaws mounted on said crossarms.

In testimony whereof I aflix my signature in presence of two witnesses.

ELTON CAMPBELL. [n

five cents each, by addressing the Commissioner of latents,

Washington, I). C.

